How does a psychrometer measure relative humidity (1 point)

Answer 1

A psychrometer measures relative humidity using two thermometers: a dry bulb thermometer and a wet bulb thermometer. The dry bulb thermometer measures the ambient air temperature, while the wet bulb thermometer has a moistened wick. As water from the wick evaporates, it cools the wet bulb thermometer, and the temperature difference between the two thermometers can be used to calculate relative humidity. The greater the difference, the lower the relative humidity, because more evaporation occurs in drier air. A psychrometric chart or formula can be used to determine the relative humidity based on these readings.